ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
A series of dialdehyde cellulose samples with varied aldehyde content were prepared byoxidation of bacterial cellulose with sodium periodate. The X-ray diffractometry profile showed thatthe crystallinity degree of bacterial cellulose was 66%, but that of the dialdehyde cellulose(containing 12% aldehyde ) was 56%. Thermal decomposition of these dialdehyde cellulose samplesand bacterial cellulose were studied by thermogravimetry. The decomposition of bacterial cellulosein nitrogen started at 230[removed info] and rapid weight loss occurred between 300-400[removed info]. The introduction ofdialdehyde group to bacterial cellulose resulted in significant shifts of decomposition to lowertemperature range. The decomposition of dialdehyde cellulose (12% aldehyde ) started at 180[removed info] andrapid weight loss between 200-350[removed info]. The temperature of rapidest weight loss shifted from 340[removed info] ofbacterial cellulose to 290[removed info] of the dialdehyde cellulose(12% aldehyde)
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.1289.pdf
